//http://groups.google.com/group/cocoa-unbound/msg/78d646715a407466

@implementation UIView(MCAnimations) 
- (void)simulateNavControllerAnimateOn 
{ 
    self.alpha = 0.0f; 
    [UIView beginAnimations:@"Nav Bar Simulate On" context:nil]; 
    [UIView setAnimationDuration:0.5f]; 
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; 
    self.alpha = 1.0f; 
    [UIView commitAnimations]; 
} 

- (void)simulateNavControllerAnimateOff 
{ 
    [UIView beginAnimations:@"Nav Bar Simulate Off" context:nil]; 
    [UIView setAnimationCurve:UIViewAnimationCurveEaseOut]; 
    self.transform = CGAffineTransformTranslate(self.transform, +[UIScreen mainScreen].applicationFrame.size.width, 0.f); 
    [UIView commitAnimations]; 
    [self performSelector:@selector(removeFromSuperview) withObject:nil afterDelay:0.6]; 
} 

@end